Union Carbide Corporation

Praxair Technology, Inc.

Union Carbide Industrial Gases Technology Corporation

Praxair, Inc.

Ronald Joseph Selines

John Erling Anderson

Pravin Chandra Mathur

Michael F Riley

Balu Sarma

Mahendrasinh D Rana

Wayne J Maddever

William John Mahoney

Jaak S Van Den Sype

Rockne J Andreini

Alan R Barlow

Zhiyou Du

Stewart K Mehlman

Balkishan Agrawal

Sudhir K Sharma

William Alphonse Kilinskas

Paul J Schaffer

Donald C Hilty

Lawrence J Hagerty

Allen H Chan

Jaak S Vand Den Sype

A metal refining method particularly useful with a basic oxygen steelmaking process, wherein during an initial period, refining oxygen is provided into the furnace headspace surrounded by a shroud comprising oxygen and inert gas, and during a subsequent period refining oxygen is provided into the furnace headspace surrounded by a flame shroud.

Metal refining method using differing refining oxygen sequence

A system for providing gases into an injection volume in one or more coherent gas jets proximate to one or more turbulent gas jets wherein a coherent gas jet is formed in a forming volume with a flame envelope prior to passage into the injection volume into which the turbulent gas jets are directly passed.

System for providing proximate turbulent and coherent gas jets

A method for providing main gas into a pool of molten metal, which is particularly useful for use in an electric arc furnace. The method employs combustion of secondary oxygen with fuel to form a flame envelope around a main gas stream which protects the main gas from entrainment of ambient gases as it passes through the headspace of the furnace. This enables the gas to retain to a substantial degree its original force upon injection into the headspace and thus may be injected into the furnace at a safe distance from the molten metal surface while still achieving substantially complete penetration into the molten metal.

Lance/burner for molten metal furnace

A lance which may be used to establish a long coherent gas jet which includes a primary passageway having a converging/diverging nozzle, and two radially spaced secondary passageways for establishing a flame barrier, each of the passageways communicating with an injection space defined by a protective jacket.

Coherent jet injector lance

A method for introducing gas into a liquid wherein a gas stream is ejected from a lance spaced above the liquid surface and directed from the lance onto the liquid surface. The gas retains substantially all its original jet axis velocity when it contacts the liquid surface, and substantially all of the gas penetrates the liquid surface and is introduced into the liquid. Preferably the gas stream is surrounded by a flame envelope running from the lance to the liquid surface, which shields the gas from ambient gas entrainment. The gas stream preferably forms a gas cavity within the liquid having a diameter substantially the same as the diameter of the gas stream as it is ejected from the lance.

Method for introducing gas into a liquid

A method for carrying out post combustion in an electric arc furnace comprising forming a preferential gas stream within the electric arc furnace, concentrating carbon monoxide within the gas stream, and providing post combustion oxygen into the gas stream where the carbon monoxide is concentrated.

Electric arc furnace post combustion method

A tuyere and method for discharging an agitating gas into the molten contents of an electrically heated furnace to reduce temperature and composition variations in its contents. The tuyere comprises a refractory plug and sleeve for installation into the refractory wall and shell of the furnace, and a dielectric section in the tuyere pipe outside the furnace shell to prevent electrical arcing and current flow into the gas supply piping and external supports.

Tuyere and method for discharging gas into a furnace

A melting furnace and method for melting metal comprising the injection of inert gas into molten metal at a defined location as a concentrated plume to create localized surface agitation, and high quality refractory surrounding the gas injection means at the furnace bottom.

Melting furnace for melting metal

Melting furnace and method for melting metal

A precisely defined steel alloy particularly suited to gas storage cylinder manufacture, and a gas storage cylinder manufactured thereof which exhibits remarkably improved performance over conventional gas storage cylinders.

High strength steel

A process which enables one to employ calcium as an inclusion shape control additive without need for complicated addition procedures.

Process to control the shape of inclusions in steels

High strength steel and gas storage cylinder manufactured thereof

Steel is produced by the argon-oxygen decarburization process which has a low hydrogen content, generally below 2 ppm.

Process to produce low hydrogen steel

A method for making a fastener having a head and a shank from wire or rod consisting essentially of AISI 200 or 300 series stainless steel comprising the following steps: (a) cooling the wire or rod to a temperature of less than about minus 75.degree. C.; (b) drawing the cold wire or rod through a die at a strain sufficient to provide a tensile strength for the wire or rod in the range of about 75 ksi to about 160 ksi, the strain and the die size being such that the area of the wire or rod will be reduced by at least about 3 percent; and (c) dividing the wire or rod into slugs and cold heading each slug to provide the fastener.

Method for making fasteners

A method for deep drawing sheet wherein (i) the sheet is formable by deep drawing and (ii) the sheet is in the form of a blank having a flange portion and a center portion comprising the following steps:

Growing community of inventors

North Salem, NY, United States of America

Ronald Joseph Selines